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TRANSFORMATION RELATIONSHIP BETWEEN ALUMINIUM IONS, ALUMINIUM HYDROXIDE AND METALUMINIUM IONS There is a chemical equilibrium among aluminum ions, aluminum hydroxide and metaluminate, but I don't know the specific relationship between them. For example,1mol aluminum ion reacts with 3mol hydroxide ion to form aluminum hydroxide, but if hydrogen ion is excessive, metaluminate ion is formed.
(1) H++AIO2-+H2O==AI (OH)3=AI3++3OH-(reversible equilibrium)
Acid balance shifts to the right, alkali balance shifts to the left
(2) Refer to the following formula!
AI3++3OH-=AI (OH)3
AI3++4OH-=AIO2-+2H2O
AI (OH)3+ OH -= AIO2-+2H2O
AI (OH)3+3H+=AI3++3H2O
AIO2-+4H+=AI3++2H2O
AIO2-+ H++ H2O = AI (OH)3
Does sulfur dioxide react with aluminate to form aluminum hydroxide or aluminum ion? Ditto But carbon dioxide reacts with metaaluminate to form aluminum hydroxide, and strong acids such as hydrochloric acid can form aluminum ions with it... but the acidity of sulfuric acid is between carbonic acid and hydrochloric acid... so what do they form? It's not a double hydrolysis, is it? (SO2 excess here) Urgent, sulfur dioxide reacts with aluminate to produce aluminum hydroxide or aluminum ion? Ditto But carbon dioxide reacts with metaaluminate to form aluminum hydroxide, and strong acids such as hydrochloric acid can form aluminum ions with it... but the acidity of sulfuric acid is between carbonic acid and hydrochloric acid... so what do they form? It's not a double hydrolysis, is it? (SO2 excess here)
Aluminum hydroxide
Al (OH)3 is a very weak electrolyte. Al 3+ and AlO 2- do not co-exist in aqueous solution, and the product is Al (OH)3
Al3++3AlO2-+6H2O 4Al (OH)3↓
So if there's aluminum, it's going to react with aluminate.
Supplement: If the sulfur dioxide is excessive, it will react with the Al (OH)3 already formed to form Al3+, sulfite
RELATED INFORMATIONS
- 1. ON THE PROBLEMS OF METALUMINATE AND CARBON DIOXIDE Why the excess CO2 in the solution with metaaluminate can only generate aluminum hydroxide rather than aluminum trivalent ion? If it is excessive, it should be aluminum trivalent ion If there is enough carbonic acid, there should be enough H+ ions
- 2. REACTION MECHANISM OF DIHYD and Carbon Dioxide? Reaction Mechanism of Dihydrolysis of Metaluminate and Carbon Dioxide?
- 3. Does CO2 react with hydroxide or aluminate first
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